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Paragon W18 Ignition Control Board
The main ignition control board checks gas flow, the igniter and some more sensing equipment. It has always been a vital board that some manufacturers have decided to blend to be a piece of the main circuit board instead of its own individual board.
Clues to watch for to know your main ignition board needs replacing
- Initial communication from the thermostat does not make it to the control board
- HVAC ignition cycle is unwilling to launch even when called upon
- Every other problem in the system is looked at and turns out to be just fine
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